These 1/4 DIN conductivity and resistivity controllers feature high ±0.5% full-scale accuracy! 0 to 2000 second selectable time delay and adjustable set point hysteresis bands lets you tailor relay action to meet your control needs.

Each unit is selectable for isolated 0-20 or 4-20 mA transmitter/recorder output; 110 or 220 Vac; normally open or closed relays; and manual or automatic temperature compensation (ATC). Manual relay control is available from the front panel.